Method for protecting SIP-based applications

Details Method for protecting SIP-based applications Method for protecting SIP-based applications

2007-01-26

2011-12-27

Moore, Jr., Michael J (Department: 2467)

Multiplex communications

Pathfinding or routing

Through a circuit switch

C370S352000, C370S392000, C709S224000, C726S023000, C726S025000

Reexamination Certificate

active

08085763

ABSTRACT:
A method for protecting SIP (Session Initiation Protocol)-based applications wherein SIP messages are analyzed and malicious SIP messages that potentially constitute a security risk for the SIP-based application are identified is discloses. Regarding a realization of a particularly high security [level] with means that are easy to implement—a pre-definable number N of pre-configurable parameters—identities—is extracted from the SIP messages and that for each SIP message a comparison of the identities with the identities extracted from previous SIP message is performed, on the base of which a maliciousness level ML is assessed for every SIP message.

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Japanese Patent Office issued a Japanese Office Action dated Feb. 10, 2010, Application No. 2007-012235.

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